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// 导入必要的库

import org.springframework.web.client.RestTemplate;

public class ApiService {

private static final String API_URL = "https://api.onenet.gov.cn";

public String registerUser(String username, String password) {

RestTemplate restTemplate = new RestTemplate();

String url = API_URL + "/register";

return restTemplate.postForObject(url, new User(username, password), String.class);

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}

}

// JWT验证逻辑

import io.jsonwebtoken.Jwts;

public boolean validateToken(String token) {

try {

Jwts.parser().setSigningKey("secretKey").parseClaimsJws(token);

return true;

} catch (Exception e) {

return false;

}

}